A078632 - cp's OEIS frontend

A078632 Number of geometric subsequences of [1,...,n] with integral successive-term ratio and length > 1.

n	a(n)
1	0
2	1
3	2
4	5
5	6
6	9
7	10
8	15
9	18
10	21
11	22
12	28
13	29
14	32
15	35
16	43
17	44
18	50
19	51
20	57
21	60
22	63
23	64
24	73
25	76
26	79
27	84
28	90
29	91
30	98
31	99
32	109
33	112
34	115
35	118
36	129
37	130
38	133
39	136
40	145
41	146
42	153
43	154
44	160
45	166
46	169
47	170
48	183
49	186
50	192
51	195
52	201
53	202
54	211
55	214
56	223
57	226
58	229
59	230
60	242

[0, 1, 2, 5, 6, 9, 10, 15, 18, 21, 22, 28, 29, 32, 35, 43, 44, 50, 51, 57, 60, 63, 64, 73, 76, 79, 84, 90, 91, 98, 99, 109, 112, 115, 118, 129, 130, 133, 136, 145, 146, 153, 154, 160, 166, 169, 170, 183, 186, 192, 195, 201, 202, 211, 214, 223, 226, 229, 230, 242]

cp's OEIS Frontend

A078632 Number of geometric subsequences of [1,...,n] with integral successive-term ratio and length > 1.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	5
5	6
6	9
7	10
8	15
9	18
10	21
11	22
12	28
13	29
14	32
15	35
16	43
17	44
18	50
19	51
20	57
21	60
22	63
23	64
24	73
25	76
26	79
27	84
28	90
29	91
30	98
31	99
32	109
33	112
34	115
35	118
36	129
37	130
38	133
39	136
40	145
41	146
42	153
43	154
44	160
45	166
46	169
47	170
48	183
49	186
50	192
51	195
52	201
53	202
54	211
55	214
56	223
57	226
58	229
59	230
60	242

n	a(n)
1	0
2	1
3	2
4	5
5	6
6	9
7	10
8	15
9	18
10	21
11	22
12	28
13	29
14	32
15	35
16	43
17	44
18	50
19	51
20	57
21	60
22	63
23	64
24	73
25	76
26	79
27	84
28	90
29	91
30	98
31	99
32	109
33	112
34	115
35	118
36	129
37	130
38	133
39	136
40	145
41	146
42	153
43	154
44	160
45	166
46	169
47	170
48	183
49	186
50	192
51	195
52	201
53	202
54	211
55	214
56	223
57	226
58	229
59	230
60	242

n	a(n)
1	0
2	1
3	2
4	5
5	6
6	9
7	10
8	15
9	18
10	21
11	22
12	28
13	29
14	32
15	35
16	43
17	44
18	50
19	51
20	57
21	60
22	63
23	64
24	73
25	76
26	79
27	84
28	90
29	91
30	98
31	99
32	109
33	112
34	115
35	118
36	129
37	130
38	133
39	136
40	145
41	146
42	153
43	154
44	160
45	166
46	169
47	170
48	183
49	186
50	192
51	195
52	201
53	202
54	211
55	214
56	223
57	226
58	229
59	230
60	242